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V8 1973 VW Beetle Project

825K views 836 replies 88 participants last post by  V8 Super Beetle 
#1 · (Edited)
Hello all!

I'm in the process of building a V8 Bug out of my 1973 VW Super Beetle. I know this is possible because it's been done before. I'm on the v8bugs.com forum where you can find a handle full of example and different ways to accomplish this, but I still have questions. There's a lot more traffic here so hopefully I can get some help. I'm pretty much a beginner hot rodder that's a DYI kinda guy.

I'm looking into building a custom 2"x3" tube chassis for my build. I've took some measurements from my bug and designed a chassis in Illustrator to size. I'm trying to design the frame so it'll use the stock suspension up front.

I currently have a 283 SBC and th350 to put into the bug, but at the moment the motor is the block, with pistons and all, and heads. The motor is at my old mans (he works nights) so I don't have access to measure the motor off for mounting and what not.

Could anyone tell me, ballpark figure, about how much distance I'll need from each frame rail to fit the engine with mounts and shorty headers?

Here's my frame design, the distance between each frame rail is exactly 27.5". Also I intend on mounting the motor to the crossmembers that hold in the front control arms / suspension. Is this enough distance? Could I bring the distance between the two main frame rails closer? How should I mount the engine to the cross member with then motor mounts I have (see picture below)?



Here's some pics of my beetle and progress. I'm still working on cutting out the trunk!





 
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#429 ·
MrPhotographer06 said:
comming along great!

a girl at schools just got a 72 super beetle..
i'm going to print a picture of a V8 bug and show it to her.. tell her to do that to it :thumbup:

haha i told her the flat 4 was a good relaible engine.. she said whats flat 4 mean?

:rolleyes:

Haha, chicks! I miss the stock 74 super I had when I went to high school. Fun little car. I wonder if she could even comprehend what's so great about a V8 bug or even the amount of work that goes into the conversion. :D :thumbup: Does she know where the thingy is that you put oil into? :drool:
 
#430 ·
OK, I've got the frame completely painted in the Master Series glossy chassis black as well as the front suspension. Also, I installed all new bushings, and ball joints in the control arms. Next is to put the front suspension together and begin working on the rear suspension.






More later...
 
#431 ·
Got some work done to the bug. Actually, I put in about 10 hrs time, but it really feels like I didn't get a whole lot done. Getting in the coil springs, even with a compressor, was a real pain without the full weight of an engine or the vehicle to help, but I got it done. That took up most my time.

I sand blasted the front leaf spring mounts.




And some misc. parts.




Misc parts painted.




I didn't realize just how bad the cabinet sand blaster at my work was clogged up until our engineer saw just how slow the process was taking. We filtered out the beads, put it back in, and it worked like a champ. I kinda thought it was taking forever and it wasn't really doing a great job of removing all the rust, but what do I know? I don't do this everyday and can't really complain because my work allows me to use some of their equipment. Any who, it works much better.

Here's the steering linkage sandblasted.




Linkage with new tie rods installed and painted.




Leaf mounts painted. You can see in this picture just how much I had to cut out of the heater channels. Quite a bit. Welding rods work great for hanging parts so you can paint them.




And here's the frame as of this weekend. Control arms installed with new bushings and ball joints. Coil springs painted and installed. New shocks installed. Lowered 2" spindles. Sway bar painted and installed with new bushings and new sway linkage.




Thats about as far as I got. More later.
 
#433 ·
SECTION25 said:
Hey mate, not your usual bubbly self? .... car looks really good. You're moving so steadily and consistently on this.

I think having shiny parts keeps the motivater higher than it would be if you just had old dirty stuff.

Keep it up, loving the pics and updates

Thanks! Actually, everything is great! :thumbup: After reading my post I know what you mean. It's kinda hard to judge a person's mood via the net. I'm just ready for the next chance I get to work on the car. Sometimes it seems like a long time in between and when I get to work on it the time goes by so fast. ;) I try to get in at least 8 hours a week. I'm pretty excited I'm getting that much closer to building my engine.

I'm thinking about doing a tutorial thread on how to build a SBC. I haven't ever built one before but would love to share what I've learn from this site and a video I purchased. I think it would be a good resource for those wanting to learn and I don't see any how to that takes you step by step.

:welcome:
 
#435 ·
SECTION25 said:
Great, that would be really handy, for me too, as I am planning to build a fresh engine for my car.

I also have that engine building DVD you've got, good isnt it? =)
Yeah, its really good and has me convinced I can do every little aspect. From the cam bearings (bought an install tool), the freeze plugs, install of valve springs (got a tool for that too),etc. Everything but the machine work of coarse.
 
#436 ·
Got some more work done this week and weekend. This will be kinda short because I smashed my finger working on the car this weekend. :eek: Leaf spring fell on it. ;) Good thing it's my ring finger that I use to play guitar with and it's a good thing I DOn't have a couple shows to play this coming friday and sat. :rolleyes: :spank: It's all good though. That's why we have four fingers. :pimp:

Here's a pic of the wheels Ray lent me so I can compare to see if I'll like my wheels black. These are the same wheels and these are for the rear. 18" x 9.5 Thanks Ray!




I thoroughly cleaned the wheel bearings, thrust washer and castle nut to later find out I had bought new bearings. ::) Well, the bearings were in really good shape so I'll hang onto them, put new ones in, for future maintenance.




Painted the spindle and dust cover and installed.




Sand blasted the calipers.




Took them apart to clean them and found a good bit of corrosion. Notice the rust on the dust boot.




I cleaned them and then blasted the inners to find out that one of the pistons had some corrosion which gave me doubts about using for rebuild. So I just bought a new caliper for $10 from the Zone.

 
#437 ·
Bearings packed, new seal, and rotor assembly installed with the good ol 2" spacers. Tire rod / steering linkage installed too. Front susp. finished.








I started finishing up the rear suspension but smashed my finger. So I called it a day. After removing the rear diff cover. ;D Finger didn't slow me down really. Just ran out of time really.
 
#438 ·
You probably know but, don't tighten the upper and lower control arm bushing bolts, along with the leaf spring mounting bolts until the full weight of the car is resting on the suspension. They will be in a bind otherwise.

BTW, you are making really good progress! :thumbup:
 
#439 ·
1ownerT said:
You probably know but, don't tighten the upper and lower control arm bushing bolts, along with the leaf spring mounting bolts until the full weight of the car is resting on the suspension. They will be in a bind otherwise.

BTW, you are making really good progress! :thumbup:
Thanks! They are just snugged up for now. I'll need to remind myself once I finally have the car completely put together and on it's feet.
 
#441 ·
MrPhotographer06 said:
these things are wicked in person, and its cool to see one built. you'll be on the road soon :thumbup:
Thanks! Yeah, fairly soon. I'm getting excited. I made some good progress this weekend. The bug is sitting low and looks tough. I'm so close to getting ready for the engine assembly. I can't wait to see it sitting in it's home.

:welcome:
 
#442 ·
:pimp: Alright, alright...(in my best Matthew Maconha voice) Progress.

Sandblasted the diff cover inside / out and the shock / u-bolt mount.




Drained the gear oil, which didn't look too bad, and added the new stuff after scraping away all the old gasket, on the diff cover and matting surface, with a gasket scraper.




I sand blasted the diff cover at work. Here it is installed. I used some of edelbrock's gasket sealer on both mating surfaces to ensure it seals up nicely.




Here the rear is after a good wire brushing and painting with some Master Series. It came out decent even though there still was some build up I couldn't remove. Seals still must be good cause there was no leakage after it staying like that for days.




Painted the shock mounts, leaf springs, and shackles.








Here's a picture of the completed rear. Well, minus the shock tower bolts which I later added. Everything is hand tight for now cause the rear will need washers or something to make up for the extra space left by the .5" narrower leaf springs. Once the body is secured and I have the 18"s on I'll do a final setup of the rear diff.




I had decide that I would move the front leaf mounts forward and move the rear back on the leaf springs to make up for it. I did this to help keep the shackles away from the fenders. They were an inch away from the fenders with the way it was previously setup. Well, that didn't work out so well. Here's the front mount moved forward 2". I drilled 1/2" holes to secure the mounts and drill an over size hole so I could mount the Isuzu leafs. The 3/4" were not cheap. :) They look manly though.




You can see that the is now further away from the inner fender. The problem I ran into is moving the rear diff back 2" started having a weird effect cause I'm moving further up the arch of the spring. I planed to secure the rear by making something similar to these.




Maybe I'll try just an inch instead of 2". Or perhaps I'll make some shackles so that they're not so close to the fenders. :confused:
 
#443 ·


Here you see the rear it reassembled with and the body it back on. I tried rolling the chassis out so I could take pictures of it 95% finished and so I can clean up my garage but it was bumping into the boards that support the body. So I figured I'd put the body back on. It's been sitting up on them blocks a little to long for comfort. ;D That and I wanted to see the new stance with the 2" lowering spindles and the 3" block in back.




From this angle you can see how the 18" wheels will be very close to the wheel leaving very little of a gap, which is what I wanted. The tires will tuck into the fenders. I was just wanting to see how things looked.




These are going to look nice. I'll have them on next progress post.




She sits fairly low. Even though a only did a 2/3 drop it seems almost slammed when I stand next to it. I'm really loving the stance and I'm sure it'll go down another 1-1.5" once everything is in and settles.




The front end aligned up nicely. The passenger wheel was 2" further inside the fender and make the car look off. Now, they're even and have the same wheel gap.




Here's the problem I was running into. The arch of the leaf spring combined with the lowering blocks pushed the wheels forward. I can move the axle back that would just amplify the effect.

I'll get her sitting right again. Next time. If it ain't one thing it's another.

 
#444 ·
Well, I got the rear mocked up and hand tightened. The wheels fit nicely and look cool. I've got a bout 1/2" on each side from the fender hitting the side wall. I'm sure I could get more by slightly opening the bottom of the body since it's not permanently mounted just yet.






Today when I get home from work I'm going to roll the chassis out and get some pictures. Then clean up the garage and organize my engine parts and tools so I can start build the motor. Finally.
 
#445 ·
A little bit of Bad and Good News...kinda. :rolleyes: Lemonade out of lemons.

So I started taking the short block apart this weekend. I got far enough that I noticed some play in the #1 piston rod. I knew right away what it was and I didn't even bother to check cause I trusted the guy I traded motors with. Lesson learned. :mad:


The BAD:

So the rod bearings spun on the #1 and #2 rod journals. It seems as though the engine wasn't ran long which is good cause there's minimal wear. The crank looks like it'll clean up with a .020 or .030 grind.

To get the 355 rotating assembly back to spec it'll take grinding and polishing the crank, having the assembly balanced, and either new connecting rods or machining to get them back to spec. After all those costs it'll probably be cheaper just to get a new rotating assembly balanced and ready to drop in from the manufacturer.


The Good...

I'm thinking about just bumping up my motor to a 383 ci. The cost of new parts and or machine work will be well within the range of a new 383 bottom end balanced.

I've also been looking into just getting new set of Speed Pro dished 4.030" hypereutectic pistons with a 1.425" wrist pin height, a new 3.75" Eagle internal balance crankshaft, and buying two replacement connecting rods. I found a whole set of 8 for $20 (stock set). I'll just upgrade the connecting rod bolts to APR. Then have the whole assembly balanced. I already have new piston rings bearings, flexplate and damper that'll fit an internal balance 383 crank. The cost will be less as well.

I did the math and with 12cc dish pistons, the .015 shim head gasket, 64cc heads, and a .021 deck height I'll be right at 10.27:1 CR. Which will be fine with the vortec heads cause you can get away with .5 more CR and still run pump gas. :cool:


I've got some thinking to do, more saving and selling of parts. :mad: So the building of my engine has been put on hold for another month at least until I save the cash and have decided which direction to go.

I should pick up about another 40-50 hp and tq though so that's good.
 
#446 ·
Save yourself some money by just getting the crank reground. You can get the 1 & 2 rods checked for twist and to make sure the big end bore is still OK .Buy a new oil pump ( there has to be a reason why the bearings failed...) and you should be right to go . You only need to rebalance if you were installing new pistons /rods etc.
BTW I would leave the cars ride height until after you have the body loaded with glass, seats and ballast weight to check fuel tank load with you and passenger on board ( I use large plastic buckets filled with water ). That saves heartache when you drive and you find the car is scraping on the ground too much.
 
#447 ·
mercmad63 said:
Save yourself some money by just getting the crank reground. You can get the 1 & 2 rods checked for twist and to make sure the big end bore is still OK .Buy a new oil pump ( there has to be a reason why the bearings failed...) and you should be right to go . You only need to rebalance if you were installing new pistons /rods etc.
BTW I would leave the cars ride height until after you have the body loaded with glass, seats and ballast weight to check fuel tank load with you and passenger on board ( I use large plastic buckets filled with water ). That saves heartache when you drive and you find the car is scraping on the ground too much.
Thanks for the advice. I have the suspension bolted up and hand tightened until I get all the weight on the car. Then I'll torque and adjust as needed.

I called the machine shop and they said chances are that the crank is trash. The crank has already been ground .010 under and you can catch your fingernail in the grooves.

I have a new oil pump. Everything I'm going to put on the engine (or was) is new. Only the block and rotating assembly were going to be reused. That has now changed.
 
#448 ·
Well, some good news. I ordered an Eagle Specialty Products internal balance stroker crankshaft for my 350.

http://store.summitracing.com/partdetail.asp?part=ESP-10350375057I


And I bought some (383) Speed Pro dish pistons.

http://store.summitracing.com/partdetail.asp?part=STL-H859CP30


Both parts will work well with my stock 5.7" rods. So I'll save some $$$ there. Coolest part is I did some shopping around and found the crank for $231 here...

https://www.horsepowerparts.com/index.php?content_id=175&product_id=21684


and a set of 8 pistons here...

http://www.kmjent.com/cart/product.php?productid=324&cat=20164519&bestseller=Y


...I called summit up and said, "I'd like to buy these parts (I listed stock #s and he gave me the pricing) but I found them cheaper here (I then gave him the website URLs)". They beat their competitors prices by $1 for each product. Summit has a beat-a-price guarantee so I thought I'd see if it was baloney. It wasn't. I got the parts for $407 with shipping. At Summit's pricing it would've been $522 total with shipping. So I saved over $100 smackers.

So I have all my parts, or they're being shipped, and the motor can go together soon. That is after hot tanking, decking, and balancing. I might not have the assembly balanced if the bob weight of my pistons, pins, rings, bearings, cap screws and rods are fairly close to the neutral bob weight of 1825 +/- 2% from Eagle. Maybe balancing will be cheap enough if I give the machine shop the bob weight and they only have to balance the crank? We'll see...
 
#449 ·
Received my new pistons and crankshaft for the 383 build. I have to send the crank back though cause there's a scratch on the one of the rod journals from shipping. It's from one of the shipping staples poking up into the box. You would think it's from the box the luxury treatment. LOL, look at that box. Oh well...

Match set is always good.




Made in India, that's good too right? LOL...






This is exactly how I received it...great job UPS and FedEx!!!




It looked OK. There was a little rust on of of the bob weights, but then I found an unacceptable scratch...back it goes.




A plastic bag of this weight really shouldn't have tears in it like it does. Wouldn't you think?

 
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